Select Multiple Model Elements does not work

I am making a simple graph and executing it with randomize, but there is no output value.
What’s wrong?
Thanks in advance.

You need to serialized your data into the graph as Generative Design has no access to Revit when doing the studies. Use a Remember node after the Element.Curves node to do so. It’s worth running through the Generative Design Primer at - this type of content is covered there.


Thank you very much!!!
It worked!

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